feat: initial Pezkuwi Apps rebrand from polkadot-apps

Rebranded terminology:
- Polkadot → Pezkuwi
- Kusama → Dicle
- Westend → Zagros
- Rococo → PezkuwiChain
- Substrate → Bizinikiwi
- parachain → teyrchain

Custom logos with Kurdistan brand colors (#e6007a → #86e62a):
- bizinikiwi-hexagon.svg
- sora-bizinikiwi.svg
- hezscanner.svg
- heztreasury.svg
- pezkuwiscan.svg
- pezkuwistats.svg
- pezkuwiassembly.svg
- pezkuwiholic.svg

packages/page-staking2/src/Validators/useExposure.ts

@@ -0,0 +1,66 @@
+// Copyright 2017-2025 @pezkuwi/app-staking authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { SpStakingExposure } from '@pezkuwi/types/lookup';
+import type { SessionInfo, Validator } from '../types.js';
+import type { UseExposure, UseExposureExposure } from './types.js';
+
+import { useMemo } from 'react';
+
+import { createNamedHook, useApi, useCall } from '@pezkuwi/react-hooks';
+import { BN } from '@pezkuwi/util';
+
+import { useCacheMap } from '../useCache.js';
+
+const OPT_EXPOSURE = {
+  transform: ({ others, own, total }: SpStakingExposure): UseExposureExposure => ({
+    others: others
+      .map(({ value, who }) => ({
+        value: value.unwrap(),
+        who: who.toString()
+      }))
+      .sort((a, b) => (b.value as BN).cmp(a.value)),
+    own: own.unwrap(),
+    total: total.unwrap()
+  })
+};
+
+function getResult (exposure: UseExposureExposure, clipped: UseExposureExposure): UseExposure {
+  let waiting: UseExposure['waiting'];
+
+  const others = exposure.others.filter(({ who }) =>
+    !clipped.others.find((c) =>
+      who === c.who
+    )
+  );
+
+  if (others.length) {
+    waiting = {
+      others,
+      total: others.reduce((total, { value }) => total.iadd(value), new BN(0))
+    };
+  }
+
+  return { clipped, exposure, waiting };
+}
+
+function useExposureImpl ({ stashId }: Validator, { activeEra }: SessionInfo): UseExposure | undefined {
+  const { api } = useApi();
+
+  const params = useMemo(
+    () => activeEra && [activeEra, stashId],
+    [activeEra, stashId]
+  );
+
+  const fullExposure = useCall(params && api.query.staking.erasStakers, params, OPT_EXPOSURE);
+  const clipExposure = useCall(params && api.query.staking.erasStakersClipped, params, OPT_EXPOSURE);
+
+  const result = useMemo(
+    () => fullExposure && clipExposure && getResult(fullExposure, clipExposure),
+    [clipExposure, fullExposure]
+  );
+
+  return useCacheMap('useExposure', stashId, result);
+}
+
+export default createNamedHook('useExposure', useExposureImpl);